More than twenty years ago, I picked up a partially-finished twin compound engine with a condenser, pump and thrust bearing. It has been languishing in a box in my shop for the majority of that time, absent the times when I come across it again, and pull it out to stare at it. I'm in the process of relocating my shop into the house and air conditioning, because I'm tired of having to clean the rust from my tools on a regular basis. Here in the Houston, Texas area, it's always humid, except for the two weeks of autumn and two weeks of spring we're allowed each year. And so I came across it again.
I've always liked marine engines, and I've had it in the back of my mind that I would like to finish this engine one day, so I thought I'd take this opportunity to see if any of you good folks could offer some insight into its origins.
A good deal of the work has been done to it, although some of it is of questionable quality. It has a piston valve on the high-pressure cylinder, and a slide valve on the low-pressure end. The bores of the cylinders are 7/8" and 1 1/2 " respectively, and the bore of the piston valve is 1/2". The fasteners are neither Imperial nor metric, so I infer that they must be BA.
It's very similar to Rivergypsy's engine in this thread, but smaller:
http://www.modelenginemaker.com/index.php/topic,3650.0.html.
If you recognize it, or could give me some clues as to where to find a set of prints with which to finish it, I'd appreciate it very much.
Thanks,
Tom